INVESTIGADORES
LENCINAS Maria Vanessa
congresos y reuniones científicas
Título:
Ground-active beetles as indicators of biodiversity conservation in Tierra del Fuego National Park
Autor/es:
LENCINAS, MV; MARTÍNEZ PASTUR, G; SOLER ESTEBAN, R; CÓRDOBA, JA; ZALAZAR, G
Lugar:
Bariloche, Argentina
Reunión:
Congreso; VI Southern Connection Congress; 2010
Resumen:
Patagonian insect diversity is mostly endemic and includes relevant relictual species. Tierra del Fuego National Park (TDFNP) is the only one National Park which protects natural ecosystems in the Island. However, the biodiversity status remains unknown to evaluate their effectiveness. The aim was to analyze the conservation effectiveness of the southern area of TDFNP compared to environmental types outside the park, through the study of the ground-active beetles (GAB) as indicators. 120 pitfall set traps were placed in forested and non-forested environment types. Data were analyzed with NMS, PERMANOVA and PERMDISP. 82 GAB morphospecies were identified, which 12% was only collected inside TDFNP, 46% only outside and 42% was shared. Ordination analyses showed differences between inside-outside TDFNP GAB assemblages and among environment types. Particularly, significant differences were detected for centroid position (F=7.09, p=<0.01) and dispersion (F=15.14, p=<0.01) of Nothofagus pumilio forest groups. However, N. betuloides forests (F=1.28, p=0.198 and F=0.14, p=0.714) and peat-lands (F=0.75, p=0.751 and F=1.11, p=0.319) did not present differences between inside-outside TDFNP. Southern area of TDFNP conserve mostly of the observed GAB diversity of N. betuloides and peat-lands. However, some environment types (e.g. N. antarctica and grasslands) are heterogeneous along the Island, as well as N. pumilio forests, which only partial diversity are included in the studied area.